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Hotel Sonngastein
  • Gastein’s Healing Power

    1. Thermal Water
    2. Radon Water Baths
    3. Healing Gallery
  • Gastein’s Healing Power

    1. Thermal Water
    2. Radon Water Baths
    3. Healing Gallery
  • Gastein’s Healing Power

    1. Thermal Water
    2. Radon Water Baths
    3. Healing Gallery
10% Autumn Advantage

A week of autumn holidays full of family moments

  • +43 6434 33260
  • Arrival
  • info@hotel-sonngastein.com

Gastein Thermal Water & Radon Therapy at Hotel Sonngastein

At Sonngastein, we combine the natural qualities of Gastein thermal water with personal care, radon baths directly at the hotel and the option of treatments at the Gastein Healing Gallery. This creates a health and regeneration experience that goes far beyond traditional wellness.

Discover Gastein's natural healing resources

Your topics at a glance

Quickly find the information that is particularly important for your health and regeneration stay at Sonngastein.

  1. Gastein Thermal Water

    Its origins, special characteristics and the natural warmth of the famous Gastein thermal water.

    Learn more
  2. Radon Water Baths

    Radon water baths directly at Sonngastein – without any additional travel outside the hotel.

    Learn more
  3. Gastein Healing Gallery

    Useful information about radon therapy in the Healing Gallery, what to expect and how to plan your stay.

    Learn more
  4. Regeneration & Wellness

    Rest, warmth and complementary wellness experiences for conscious recovery between treatments.

    Learn more
  5. Offers & Your Stay

    Options for regeneration, radon water baths and individually planned health stays.

    View offers
  6. Frequently Asked Questions

    Answers about thermal water, radon water baths, the Healing Gallery and your stay.

    View questions
Indoor thermal pool with genuine Gastein thermal water at Hotel Sonngastein
Genuine Gastein Thermal Water

Naturally from the depths of the Hohe Tauern

Gastein Thermal Water – a special treasure of the region

Gastein thermal water begins its long journey as rainwater and melting snow in the mountains around Bad Gastein. It penetrates deep into the rock, where it is naturally heated before eventually returning to the surface in Bad Gastein.

The water emerges from a total of 17 thermal springs at temperatures of approximately 44 to 47 °C. From there, it is piped to selected hotels and health facilities throughout the Gastein Valley – including directly to Hotel Sonngastein.

Our indoor thermal pool is filled with genuine Gastein thermal water. For use in the swimming pool, the thermal water is de-radonised and then brought to a pleasant bathing temperature of around 30 °C.

This deliberately separates the thermal pool from the therapeutic use of radon. At Sonngastein, radon-containing thermal water is used exclusively in the specially designed radon water baths. These have their own dedicated supply line and form a separate part of our health offering.

Important to know: The indoor thermal pool contains de-radonised Gastein thermal water. For radon applications, Sonngastein offers separate radon baths with their own dedicated supply line.
Discover our Water World More about radon water baths
17 springs Natural thermal water from Bad Gastein
44–47 °C Temperature directly at the thermal springs
Genuine thermal water In the indoor pool at Hotel Sonngastein
Around 30 °C Pleasant temperature in the indoor thermal pool

Radon-containing thermal water directly at the hotel

Radon Water Baths Directly at Sonngastein

At its source, Gastein thermal water naturally contains a small amount of radon. While the thermal water used in our indoor pool is de-radonised, the radon water baths have their own dedicated supply line. This means that the thermal pool and radon water baths at Sonngastein are clearly separated from one another.

For the radon application, the designated thermal water is fed directly into a specially designed bath. The radon water bath is a quiet individual treatment carried out in a separate area of the hotel.

The major advantage for our guests is that the radon water baths are located directly at Hotel Sonngastein. There is no need to travel to an external health facility. After the treatment, you can immediately retreat and give your body time to rest and recover.

Depending on your personal goals, radon water baths can be used individually or incorporated into a longer health and regeneration stay. A combination with treatments at the Gastein Healing Gallery may also form part of such a stay following appropriate medical advice.

What makes Sonngastein special: Our radon water baths have their own dedicated supply line for the specially designated radon-containing Gastein thermal water. The treatment takes place directly at the hotel – with short distances and the opportunity to rest immediately afterwards.

Radon applications are not equally suitable for everyone. If you have health concerns, pre-existing medical conditions or are planning a course of radon therapy, the treatment should be medically assessed and individually coordinated in advance.

Enquire about a health stay More about the Healing Gallery
Room for radon water baths at Hotel Sonngastein with hotel dog Wolly
Radon water baths directly at the hotel – with a dedicated supply line for radon-containing thermal water
Rest and regeneration after a treatment at Hotel Sonngastein
Short distances and time to rest immediately after your treatment
Directly at the hotel Radon water baths without additional travel
Dedicated supply line Separate from the de-radonised thermal pool
Individual treatment Treatment in a specially designed bath
Short distances Rest and recovery immediately after the treatment
Exterior view of the Gastein Healing Gallery in Böckstein
The Gastein Healing Gallery in Böckstein
Therapy area inside the Gastein Healing Gallery
Radon, warmth and high humidity deep inside the mountain
Gallery train inside the Gastein Healing Gallery in the Radhausberg
Travelling into the Radhausberg on the gallery train

Radon heat therapy in the Radhausberg

Gastein Healing Gallery – radon heat therapy deep inside the mountain

The Gastein Healing Gallery is located in the Radhausberg in Böckstein, just a few kilometres from Hotel Sonngastein. Deep inside the mountain, natural radon, warmth and high humidity come together to create the unique climate used for radon heat therapy.

Unlike the radon water baths at Sonngastein, treatment in the Healing Gallery takes place in a separate medical facility outside the hotel. Before your first session, a medical examination is carried out there to determine whether the therapy is suitable for you.

A gallery train then takes guests to the therapy stations inside the mountain. Around 60 minutes are spent in the actual therapy area. Depending on the station, temperatures are approximately 37 to 41.5 °C, with humidity levels of around 70 to 100 %. After leaving the gallery, a rest period follows at the health centre.

For your first appointment, you should allow approximately four hours in total, including the medical examination, introduction, changing, journey into the gallery, therapy and subsequent rest period. Further sessions generally take less time.

Sonngastein as your base during your stay: The Gastein Healing Gallery is located in Böckstein and not directly at the hotel. At Sonngastein, you can enjoy a comfortable base for your health stay and combine Healing Gallery sessions with radon water baths directly at the hotel as well as dedicated periods of rest and regeneration.

Whether Healing Gallery therapy is suitable for you, as well as the number and timing of sessions, is assessed individually from a medical perspective. The medical examination and therapy itself are carried out by the Gastein Healing Gallery.

Official Healing Gallery website Enquire about your stay at Sonngastein
Radon, warmth & humidity The unique therapeutic environment deep inside the Radhausberg
Medical examination Medical assessment before your first session
Train journey into the mountain The gallery train takes guests to the therapy stations
Around 60 minutes in the mountain Followed by the scheduled rest period at the health centre

Guidance for your health retreat

What your health and regeneration stay could look like

Gastein thermal water, radon water baths directly at Sonngastein, treatments at the Gastein Healing Gallery, exercise, massages and dedicated periods of rest can be combined in different ways depending on your personal goals. The following examples show possible elements for your stay.

3 to 4 nights

Short Regeneration Retreat

Take a few days to consciously slow down and discover the special health and relaxation experiences available at Sonngastein.

  • Relax in genuine, de-radonised Gastein thermal water
  • Radon water bath directly at the hotel, if medically suitable
  • Massage or soothing treatment according to your personal preference
  • Walks, gentle exercise and dedicated periods of rest
  • Time for relaxation and regeneration at Sonngastein
Particularly suitable for

Guests looking for a short break who would like to combine thermal water, regeneration and selected treatments.

5 to 7 nights

Combine Radon & the Healing Gallery

More time for medically coordinated treatments and sufficient recovery periods between individual appointments.

  • Medical examination and consultation at the Gastein Healing Gallery
  • Healing Gallery sessions according to individual medical recommendations
  • Radon water baths directly at Sonngastein, depending on personal suitability
  • Plenty of time for rest and regeneration between treatments
  • Thermal water and gentle exercise as part of your stay
Particularly suitable for

Guests who would like to integrate the Gastein Healing Gallery and radon water baths at Sonngastein into a consciously planned health stay.

Individually planned

Longer Health Stay

More time allows for individually coordinated treatments and deliberate recovery periods between appointments.

  • Medically coordinated therapy plan at the Gastein Healing Gallery
  • Radon water baths at Sonngastein according to individual medical guidance
  • Complementary massages and soothing treatments
  • A balanced combination of movement and rest
  • Sonngastein as a comfortable base throughout your stay
Particularly suitable for

Guests who would like to allow sufficient time for an individually planned health or therapeutic stay and longer periods of regeneration.

Important to know: These examples are intended as general guidance and do not constitute medical advice. Whether radon water baths or therapy at the Gastein Healing Gallery are suitable, as well as the number, sequence and timing of treatments, should be assessed individually from a medical perspective. We are happy to help you plan your stay at Sonngastein around your scheduled appointments.
Enquire about a health stay Continue to Regeneration & Wellness

Time to rest between treatments

Regeneration is part of a health stay

Radon water baths and Healing Gallery appointments are only one part of a consciously planned stay. Just as important is having enough time to slow down, move gently, sleep well and enjoy your holiday without a tightly packed schedule.

Quiet relaxation area at Hotel Sonngastein in Bad Gastein
Rest and retreat as a conscious part of your stay
Heated outdoor pool at Hotel Sonngastein with views of the Gastein mountains
Warmth and water for relaxing holiday moments
Massage room at Hotel Sonngastein
Massages as an individual addition to your regeneration time

Especially during a health or therapeutic stay, not every day needs to be filled with treatments. Free time between appointments creates space for recovery, sleep, gentle movement and a relaxed daily rhythm.

At Sonngastein, you can shape this time entirely according to your personal needs: in the relaxation area, on a walk through the Gastein Valley, with a massage or simply by enjoying a quiet afternoon at the hotel.

Our water and wellness areas can also be part of this regeneration time. The indoor thermal pool contains de-radonised Gastein thermal water. Further information about our pools, temperatures and Water World can be found on our dedicated Water World page.

Recovery at your own pace A health stay does not have to mean a tightly packed therapy schedule. Consciously planned breaks create time to rest after treatments, enjoy gentle movement and simply experience the holiday moments that make you feel good.

Rest & Retreat

Unscheduled time and peaceful spaces give you room to rest after treatments and slow down your daily rhythm.

Warmth & Relaxation

Thermal water, saunas and warm places to retreat can complement relaxing holiday moments between appointments.

Massages & Treatments

Massages and other treatments can be added individually and scheduled to suit the personal rhythm of your stay.

Gentle Movement

Walks and gentle activity in the Gastein mountains add variety to your stay and can be adapted flexibly to your daily routine.

A good health stay also leaves enough room for what happens between the treatments.

Discover Wellness & Spa Discover our Water World Continue to the offers

Offers for your getaway in Bad Gastein

Discover the right stay at Sonngastein

Whether you are planning a few days of regeneration or a longer health stay in Bad Gastein, discover our current offers and combine your holiday at Sonngastein according to your personal wishes with Gastein thermal water, radon water baths or treatments at the Gastein Healing Gallery.

Are you planning an individual health or therapeutic stay? Not every getaway fits into a ready-made package. We are happy to help you find the right length of stay at Sonngastein around any radon water baths or Healing Gallery appointments you have already planned.
room image #1

Sonngastein getaway for two - 3 to 6 nights to recharge your batteries

  • 23.05.2026 - 17.10.2026
  • + 3 Time Frames
  • 3-6 Nights
  • from € 516,00 2 Adults
view offer
room image #1

Time for Two

  • 10.09.2026 - 04.10.2026
  • + 2 Time Frames
  • 2-4 Nights
  • from € 379,00 2 Adults
view offer
room image #1

Sonngastein getaway - 3 to 6 nights to recharge your batteries

  • 23.05.2026 - 17.10.2026
  • + 2 Time Frames
  • 3-6 Nights
  • from € 525,00 pp
view offer
room image #1

Tennis & wellness time-out at Sonngastein

  • 09.06.2026 - 25.09.2026
  • + 5 Time Frames
  • 3-6 Nights
  • from € 516,00 pp
view offer
room image #1

A Little Getaway for Two - stay 1-3 nights

  • 14.08.2026 - 10.10.2026
  • 1-3 Nights
  • from € 215,00 2 Adults
view offer
room image #1

Indulgence & Relaxation – 7 Nights incl. 2 Massages

  • 09.01.2027 - 30.01.2027
  • + 3 Time Frames
  • 7-13 Nights
  • from € 1.222,00 pp
view offer
room image #1

Recharge & Unwind – incl. 50 min. Massage

  • 09.01.2027 - 30.01.2027
  • + 3 Time Frames
  • 3-6 Nights
  • from € 596,00 pp
view offer

Good to know

Frequently Asked Questions about Thermal Water, Radon & the Healing Gallery

Here you will find answers about Gastein thermal water, radon water baths directly at Sonngastein, the Gastein Healing Gallery and planning your health or regeneration stay in Bad Gastein.

What makes Gastein thermal water so special?

Gastein thermal water begins its journey as rainwater and melting snow in the mountains around Bad Gastein. It penetrates deep into the rock, where it is naturally heated before returning to the surface.

It emerges from a total of 17 thermal springs in Bad Gastein at temperatures of approximately 44 to 47 °C. From there, it is supplied to selected hotels and health facilities – including directly to Sonngastein.

More about Gastein thermal water Discover our Water World
Does the thermal water in the hotel pool contain radon?

No. For use in our indoor thermal pool, Gastein thermal water is de-radonised. The indoor pool therefore contains genuine Gastein thermal water, but not the radon-containing thermal water intended for radon applications.

At Sonngastein, radon-containing thermal water is used exclusively for the specially designed radon water baths. These have their own dedicated supply line and are clearly separated from the thermal pool.

More about radon water baths
Can I have a radon water bath directly at Sonngastein?

Yes. Hotel Sonngastein has specially designed radon baths with their own dedicated supply line for radon-containing Gastein thermal water.

The treatment takes place directly at the hotel. This means there is no need for additional travel, and afterwards you can immediately retreat and allow sufficient time to rest.

We recommend arranging appointments well in advance, particularly if you are planning several treatments during your stay.

Radon water baths at Sonngastein Enquire about your stay
What is the difference between the thermal pool, a radon water bath and the Healing Gallery?

The indoor thermal pool is filled with de-radonised Gastein thermal water and is intended for bathing, swimming and relaxation.

A radon water bath is a separate individual treatment in a specially designed bath. Radon-containing Gastein thermal water is supplied to the hotel via its own dedicated line.

The Gastein Healing Gallery is an independent medical facility in Böckstein. Radon heat therapy takes place there in the unique climate inside the Radhausberg.

Gastein Thermal Water Radon Water Baths Gastein Healing Gallery
Is the Gastein Healing Gallery located directly at the hotel?

No. The Gastein Healing Gallery is located in the Radhausberg in Böckstein and is an independent medical facility.

Sonngastein can serve as a comfortable base for a health or therapeutic stay involving Healing Gallery sessions. At the hotel, you can also enjoy radon water baths directly on site as well as opportunities for rest and regeneration.

More about the Gastein Healing Gallery Official Healing Gallery website
Do I need a medical examination before a Healing Gallery session?

Yes. Before your first therapy session, the medical team at the Gastein Healing Gallery assesses whether radon heat therapy is suitable for you.

Detailed medical information and any information about documents you may need can be obtained directly from the Gastein Healing Gallery.

How much time should I allow for a Healing Gallery session?

For your first appointment, you should allow approximately four hours in total, including the medical examination, introduction, changing, journey into the gallery, therapy and subsequent rest period.

Around 60 minutes are spent in the actual therapy area inside the mountain. Further sessions generally require less total time than the first appointment.

See what to expect during a Healing Gallery visit
Is radon therapy suitable for everyone?

No. Whether a radon application is suitable depends, among other factors, on the type of treatment, your individual health status and any pre-existing medical conditions.

Medical radon applications should therefore be assessed individually. For therapy at the Gastein Healing Gallery, the medical assessment is carried out by the medical team there.

How do I book radon water baths and Healing Gallery sessions?

Radon water baths at the hotel can be requested directly from Sonngastein and integrated into your stay.

Medical examinations and therapy sessions at the Gastein Healing Gallery are arranged directly with the Healing Gallery. We recommend coordinating your hotel stay and therapy appointments as early as possible.

Enquire about your stay at Sonngastein Healing Gallery appointments & information
How long should I plan for a health stay?

For a short regeneration retreat, even a few days at Sonngastein can provide time for thermal water, rest and selected treatments.

If you are planning several radon water baths or Healing Gallery sessions, the length of your stay will depend on the scheduled treatments, medical recommendations and the amount of rest time you would like between appointments.

Examples for your health stay Discover suitable offers
Medical note: The information on this page is provided for general guidance only and does not replace personal medical advice, diagnosis or treatment. Whether a radon application or therapy at the Gastein Healing Gallery is personally suitable should be assessed individually by a medical professional.
Enquire about your stay at Sonngastein Visit the Gastein Healing Gallery Back to overview

Contact

Family Mag. Zitka
Sonnleitenstraße 6
5640 Bad Gastein
Austria

info@hotel-sonngastein.com
+43 6434 33260

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